Draft device for locomotives



No. 608,870. Patented Aug. 9, I898.

M. KELLY.

OBAFT DEVICE FOR LOCOMOTIVES.

(Application filed Nov. 6, 1897.)

(No Model.)

ATTORNEYS.

Warren Sterne aren't rrrcn.

MICHAEL KEL LY, OF BLOOMINGTON, ILLINOIS.

DRAFT DEVICE FOR LOCOMOTIVES.

SPECIFICATION forming part of Letters Patent No. 608,870, dated August 9, 1898. Application filed November 6, 1897. Serial No. 657,671. (No model.)

To all whom it may concern:

Be it known that 1, MICHAEL KELLY, of Bloomington, in the county of McLean and State of Illinois, have invented a new and Improved Draft Device for Locomotives, of which the following is a full, clean-and exact description.

My invention relates to an improvement in devices intended to improve the draft in the fire-box of a locomotive.

It consists of certain novel constructions which will be hereinafter described, and particularly pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a longitudinal sectional elevation taken through the fire-box and boiler of a locomotive and showing the draft-pipes in position; and Fig. 2 is a horizontal section taken through the fire-box, showing the draftpipes beneath.

The object of my device is to supply an increased amount of air to the firebox of a locomotive and at'the same time to keep the ashpan closed, so that there willbe no possibility of escaping sparks setting fire to any of the railway structures.

In the drawings, O represents the shell of a locomotiveboiler, and F the fire-box. The ash-pan G, located'at the bottom of the firebox, is of any usual construction and may be provided at front and rear with dampers g. In using the pan with my device these dampers should normally be kept closed, as a sufficient amount of air is supplied through the pipes of my device to insure complete combustion. r

In applying my device to a locomotive two funnels a are mounted upon the forward end of the locomotive, where the air will have a free and unobstructed access thereto. As the locomotive moves forward the air will flow into these funnels and be conducted into the pipes A, to and through the common pipe A, which is connected to both of the pipes A. It will be conducted through this pipe into the ash-pan.

Similar funnels a are located at the rear of the driving-whecls and extend outside the same, where the air will have free access thereto; These funnels open forward and are connected witha pipe A which curves to a common connection with the pipe A extending forward and entering the ash-pan from struction, by which the pipe may. be closed when desired, so as to prevent flow of air therethrough. The pipe A may also be pro- {vided with dampers B, bywhich it may be closed and the flow of air therethrough pre vented.

It, is preferable when this device is used that the dampers g of the ash-pan be kept closed. If desired, however, these dampers may be opened, so as to admit an additional quantity of air. WVhen the locomotive is run ning, the air will be forced through the funnels a and a and directed into the fire-box in a strong stream, which will .cause a rapid combustion of fuel upon the grate. The strength of this blast depends upon the speed at which the engine is running.

YVhen the engine is stationary, the dampers g maybe opened, if necessary. In using this method of supplying air to the furnace a more complete combustion'will be obtained than by the ordinary means, and, moreover, the escape of cinders and coals from the ashpan'will be entirely prevented.

'I-Iaving thus described my invention, I

claim as new and desire to secure by Letters Patent T 1. A locomotive having a closed fire-box and an air-supplying apparatus, comprising a pipe leading from the ash-pan forward to the,end of the locomotive and terminating in an open funnel, a pipe leading from the rear end of the ash-pan and branching to each side, each branch terminating in forwardlyextending funnels located outside of the engine parts, and a common connection of such pipes with the ash-pan, whereby the air is discharged beneath the grate, substantially as described.

2. A locomotive, having a closed fire-box and a draft apparatus, comprising pipes leading from the ash-pan forward and to the rear, the pipe at the rear branching to each side and curving forward, the ends of said pipes being supplied with funnels opening forward and located outside of the engine-body, where the air will have free access thereto, a common receiver for the air from said pipes, located beneath the grates and discharging the air upward therefrom, and dampers in said pipes between their outer ends and their junctions, substantially as described.

3. A locomotive, having a closed fire-box and a draft apparatus, comprisingapipe lead- MICHAEL KELLY.

NVitnesses:

I. R. HAYDEN, E. R. RICHARDS. 

